Friedrich Air Conditioner CP10F10 User Manual

Room Air Conditioner  
Service and Parts  
Manual  
Timer  
0n/0ff  
0F  
hr  
Mode  
Fan Only Cool  
Dry Money Saver®  
Auto  
Swing  
Fan  
Speed  
Power  
Temp  
115Volts  
CP10F10 CP12F10  
CP10 - CP12 Svc Parts 2010 (05/10)  
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Safety Precautions  
Safety Precautions  
To prevent injury to the user or other people and property damage, the following instructions  
must be followed.  
Incorrect operation due to ignoring instructions will cause harm or damage. The seriousness  
is classified by the following indications.  
This symbol indicates the possibility of death or serious injury.  
WARNING  
This symbol indicates the possibility of injury or damage to property only.  
CAUTION  
Meanings of symbols used in this manual are as shown below.  
Be sure not to do.  
Be sure to follow the instruction.  
WARNING  
Always install the expansion panel(s).  
Do not place the power cord near a heater.  
• Improper assembly or installation may cause  
incorrect operation, including injury, fire, and  
electric shock hazards.  
• It may cause fire and electric shock.  
Do not use the power cord near flammable  
gas or combustibles such as gasoline,  
benzene, thinner, etc.  
Do not disassemble or modify products.  
• It may cause explosion or fire.  
• It may cause failure and electric shock.  
Service Manual 3  
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Safety Precautions  
Plug in the power plug  
properly.  
Do not operate or stop the  
unit by inserting or pulling  
out the power plug.  
Do not damage or use an  
unspecified power cord.  
• Otherwise, it will cause  
electric shock or fire.  
• It will cause electric shock or  
fire.  
• It will cause electric shock or  
fire.  
Do not modify power cord  
length.  
Use the air conditioner on a  
single outlet circuit.(see page 7.)  
Do not share the outlet with  
other appliances.  
Always plug into a  
grounded outlet.  
• It will cause electric shock or  
fire.  
It will cause electric shock or  
fire.  
• No grounding may cause  
electric shock.  
Ventilate before operating air Do not use the socket if it is  
Do not operate with wet  
hands or in damp  
environment.  
conditionerwhen gas goes  
out.  
loose or damaged.  
It may cause explosion, fire,  
and burn.  
• It may cause fire and electric  
shock.  
• It will cause electric shock.  
4 Room Air Conditioner  
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Safety Precautions  
If water enters the product, turn off the the  
power switch of the main body of appliance.  
Contact service center after taking the power-  
plug out from the socket.  
Do not clean the air conditioner with water.  
• It will cause electric shock or failure of  
machine.  
• Water may enter the unit and degrade the  
insulation. It may cause an electric shock.  
CAUTION  
Never touch the metal parts of the unit  
when removing the filter.  
Do not block the inlet or outlet.  
• They are sharp and may cause injury.  
It may cause failure of appliance or  
performance deteriorate.  
Ensure that the outer caseis not damaged  
by age orwear.  
Be cautious not to touch the sharp edges  
when installing.  
• Leaving it damaged couldresult in the air  
conditioner falling out of the window, creating  
a safety hazard.  
It may cause injury.  
Sharp  
edges  
Service Manual 5  
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Dimensions  
Dimensions  
Symbols Used in this Manual  
This symbol alerts you to the risk of electric shock.  
This symbol alerts you to hazards that could cause harm to the  
air conditioner.  
NOTICE  
This symbol indicates special notes.  
Outside Dimensions  
11  
1
525(20 /16")  
470(18 /2")  
6 Room Air Conditioner  
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Specfications  
rduct Specifications
MODELS  
CP10F10  
CP12F10  
ITEMS  
, 115, 60Hz  
POWER SUPPLY  
COOLING CAPACITY  
INPUT  
10,000  
12,000  
1,110  
10.2  
(Btu/h)  
(W)  
920  
8.5  
RUNNING CURRENT  
(A)  
.
10.8  
E.E.R  
(BTU/W h)  
OPERATING  
80 (DB)* 67(WB)**  
95 (DB)* 75(WB)**  
INDOOR ( F)  
OUTDOOR ( F)  
CONDITION  
530g(18.7oz)  
540g(19.0oz)  
REFRIGERANT (R410) CHARGE  
EVAPORATOR  
Ø9.52, 2ROW 13STACKS  
Ø5.0 , 3ROW 18STACKS  
TURBO FAN  
CONDENSER  
FAN, INDOOR  
PROPELLER TYPE FAN WITH SLINGER RING  
3/3  
FAN, OUTDOOR  
FAN SPEEDS, FAN/COOLING  
FAN MOTOR  
6 POLES  
REMOTE CONTROLLER  
OPERATION CONTROL  
ROOM TEMP. CONTROL  
AIR DIRECTION CONTROL  
CONSTRUCTION  
THERMISTOR  
HORIZONTAL LOUVER (UP & DOWN), VERTICAL LOUVER (RIGHT&LEFT)  
SLIDE IN-OUT CHASSIS  
OVERLOAD PROTECTOR  
COMPRESSOR  
FAN MOTOR  
PROTECTOR  
INTERNAL THERMAL PROTECTOR  
3 WIRE WITH GROUNDING  
POWER CORD  
DRAIN SYSTEM  
ATTACHMENT PLUG (CORD-CONNECTED TYPE)  
DRAIN PIPE OR SPLASHED BY FAN SLINGER  
235/8x1431/32x225/16  
OUTSIDE DIMENSION  
(W x H x D)  
(inch)  
(mm)  
380 x 600 x 555  
* DB:Dry Bulb  
**WB:Wet Bulb  
Operation  
• DESIGNED FOR COOLING ONLY  
• POWERFUL AND INCREDIBLE COOLING  
• TOP-DOWN CHASSIS FOR THE SIMPLE INSTALLATION AND SERVICE  
• BUILT-IN ADJUSTABLE THERMOSTAT  
• WASHABLE ONE-TOUCH FILTER  
• COMPACT SIZE  
Serrvice Manual 7  
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7
5
3
Power  
1
Timer  
0n/0ff  
0F  
hr  
Mode  
Temp  
Fan Only Cool  
2
Dry Money Saver®  
Fan S peed  
4
Auto  
Swing  
Fan  
ower  
Speed  
Mode  
Timer  
Temp  
5
6
3
Auto  
Swing  
A
S wing  
4
6
2
1
6. AUTO SWING  
This button can automatically control the air flow  
direction.  
7
Service Manual 8  
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Disassembly  
Disassembly  
Before the following disassembly, POWER SWITCH set to OFF and disconnect the power cord.  
Mechanical Parts  
1. FRONT GRILLE  
1. Open the lnlet grille upward or downward.  
2. Remove the screw which fastens the front grille.  
3. Pull the front grille from the right side.  
4. Remove the front grille.  
5. Re-install the component by referring to the  
removal procedure, above.(See Figure 1)  
Figure 1  
2. CABINET  
1. After disassembling the FRONT GRILLE, remove  
the 2 screws which fasten the cabinet at both  
sides.  
2. Remove the 2 screws which fasten the cabinet at  
back.  
3. Pull the base pan forward. (See Figure 2)  
4. Remove the cabinet.  
5. Re-install the component by referring to the  
removal procedure, above.  
Figure 2  
3. CONTROL BOX  
1. Disconnect the unit from the power source.  
2. Remove the front grille.  
3. Remove the cabinet.  
4. Remove the screw which fastens the control box  
cover.  
5. Remove the housing which connects motor wire  
in the control box.  
6. Remove the 3 leads from the compressor.  
7.Discharge the capacitor by placing a 20,000  
ohmresistor across the capacitor terminals.  
8. Remove the 2 screws which fasten the control  
box.(See Figure 19)  
9. Pull the control box forward completely.  
10. Re-install the components by referring to the  
removal procedure, above. (See Figure 3)  
Figure 3  
Service Manual 9  
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Disassembly  
Air Handling Parts  
1. AIR GUIDE AND BLOWER  
1. Remove the front grille.  
2. Remove the cabinet.  
3. Remove the control box.  
4. Remove the 3 screws which fasten the brace.  
5. Remove the brace.  
6. Remove the 2 screws which fasten the evaporator.  
7. Move the evaporator forward and pulling it upward  
slightly. (See Figure 4)  
8. Move the evaporator to the left carefully.  
9. Pull out the hook of orifice by pushing the tabs and  
remove it. (See Figure 5)  
Figure 4  
10. Remove the clamp with a hand plier which  
secures the blower.  
11. Remove the blower.  
12. Remove the 4 screws which fasten the air guide  
from the barrier.  
13. Move the air guide backward, pulling out from the  
base pan.  
14. Re-install the components by referring to the  
removal procedure, above.  
Figure 5  
2. FAN AND SHROUD  
1. Remove the cabinet.  
2. Remove the brace.  
3. Remove the 3 screws which fasten the condenser.  
4. Move the condenser to the left carefully.  
5. Remove the clamp which secures the fan.  
6. Remove the fan and then pull out the shroud.  
(See Figure 6)  
7. Re-install by referring to the removal procedure.  
Figure  
6
10 Room Air Conditioner  
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Disassembly  
3. MOTOR  
1. Remove the cabinet.  
2. Remove the evaporator.  
3. Remove the orifice.  
4. Remove the blower.  
5. Remove the fan.  
6. Remove the control box cover and housing of the  
motor in the control box.  
7. Remove the 2 screws which fasten the motor from  
the mount motor. (See Figure 7)  
8. Remove the motor.  
9. Re-install the components by referring to the  
removal procedure, above.(See Figure 7)  
Figure 7  
Electrical Parts  
1. OVERLOAD PROTECTOR  
1. Remove the cabinet.  
2. Remove the nut which fastens the terminal cover.  
3. Remove the terminal cover. (See Figure 8)  
4. Remove all the leads from the overload protector.  
5. Remove the overload protector.  
6. Re-install the component by referring to the  
removal procedure, above.  
Figure 8  
2. COMPRESSOR  
1. Remove the cabinet.  
2. Discharge the refrigerant system using a FreonTM  
Recovery System.  
If there is no valve to attach the recovery system,  
install one (such as a WATCO A-1) before venting  
the FreonTM. Leave the valve in place after  
servicing the system.  
3. Remove the overload protector.  
4. After purging the unit completely, unbraze the  
suction and discharge tubes at the compressor  
connections.  
5. Remove the 3 nuts and the 3 washers which  
fasten the compressor.  
6. Remove the compressor. (See Figure 9)  
7. Re-install the components by referring to the  
removal procedure, above.  
Figure 9  
Service Manual 11  
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Disassembly  
3. CAPACITOR  
MODEL : TOUCH & REMOTE CONTROL TYPE MODEL  
1. Remove the control box.  
2. Remove the screw which fasten control panel from  
control box.  
3. Remove the screw which located in the front.  
4. Open the bottom side of control box.  
5. Remove the screw and the clamp which fastens  
the capacitor.  
6. Disconnect all the leads of capacitor terminals.  
7. Re-install the components by referring to the  
Figure 10  
removal procedure, above. (See Figure 10)  
4. POWER CORD  
1. Remove the control box.  
2. Open the control box.  
3. Disconnect the grounding screw from the control  
box.  
4. Disconnect the 2 receptacles.  
5. Remove a screw which fastens the clip cord.  
(See Figure 11)  
6. Remove the power cord.  
7. Re-install the component by referring to the above  
removal procedure, above.  
(Use only one ground-marked hole  
connection.)  
for ground  
Figure 11  
8. If the supply cord of this appliance is damaged, it  
must be replaced by the special cord. (The  
special cord means the cord which has the same  
specification marked on the supply cord attached at  
the unit.)  
Refrigerating Cycle  
TM  
CAUTION: Discharge the refrigerant system using a Freon Recovery System. If there is no valve  
to attach the recovery system, install one (such as a WATCO A-1) before venting the Freon . Leave  
TM  
the valve in place after servicing the system.  
1. CONDENSER  
1. Remove the cabinet.  
2. Remove the 3 screws which fasten the  
brace.  
3. Remove the 3 screws which fasten the condenser  
and shroud.  
4. After discharging the refrigerant completely,  
unbraze the interconnecting tube at the condenser  
connections.  
5. Remove the condenser carefully.  
6. Re-install the component by referring to notes.  
(See Figure 12)  
Figure 12  
12 Room Air Conditioner  
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Disassembly  
2. EVAPORATOR  
1. Remove the cabinet.  
2. Remove the 2 screws which fasten the evaporator.  
3. Move the evaporator sideways carefully.  
4. After discharging the refrigerant completely,  
unbraze the interconnecting tube at the evaporator  
connections.  
5. Remove the evaporator carefully.  
6. Re-install the component by referring to notes.  
(See Figure 1)  
3. CAPILLARY TUBE  
1. Remove the cabinet.  
2. After discharging the refrigerant completely,  
unbraze the interconnecting tube at the capillary  
tube.  
3. Remove the capillary tube.  
4. Re-install the component by referring to notes.  
Figure 13  
NOTICE  
remaining in the system. With valves A and B  
closed, stop the vacuum pump.  
4) Remove the hose from the vacuum pump and  
place it on the charging cylinder. See figure  
14B. Open valve C.  
Discharge the line at the manifold connection.  
5) The system is now ready for final charging.  
— Replacement of the refrigeration cycle.  
1. When replacing the refrigeration cycle, be sure to  
TM  
Discharge the refrigerant system using a Freon  
recovery System.  
If there is no valve to attach the recovery system,  
install one (such as a WATCO A-1) before venting  
the Freon . Leave the valve in place after  
TM  
6. Recharge as follows :  
servicing the system.  
1) Refrigeration cycle systems are charged from  
the High-side. If the total charge cannot be put  
in the High-side, the balance will be put in the  
suction line through the access valve which you  
installed as the system was opened.  
2) Connect the charging cylinder as shown in figure  
33B.  
With valve C open, discharge the hose at the  
manifold connection.  
3) Open valve A and allow the proper charge to  
enter the system. Valve B is still closed.  
4) If more charge is required, the high-side will not  
take it. Close valve A.  
2. After discharging the unit completely, remove the  
desired component, and unbraze the pinch-off  
tubes.  
3. Solder service valves into the pinch-off tube ports,  
leaving the valves open.  
4. Solder the pinch-off tubes with Service valves.  
5. Evacuate as follows.  
1) Connect the vacuum pump, as illustrated figure  
14A.  
2) Start the vacuum pump, slowly open manifold  
valves A and B with two full turns counterclock-  
wise and leave the valves open.  
The vacuum pump is now pulling through valves  
A and B up to valve C by means of the manifold  
and entire system.  
5) With the unit running, open valve B and add the  
balance of the charge.  
a. Do not add the liquid refrigerant to the Low-side.  
b. Watch the Low-side gauge; allow pressure to  
rise to 39 lbs.  
c. Turn off valve B and allow pressure to drop.  
d. Repeat steps b. and c. until the balance of the  
charge is in the system.  
CAUTION: If high vacuum equip-  
ment is used, just crack valves A  
and B for a few minutes, then open  
slowly with the two full turns counter-  
clockwise. This will keep oil from foaming  
and being drawn into the vacuum pump.  
6) When satisfied the unit is operating correctly,  
use the pinch-off tool with the unit still running  
and clamp on to the pinch-off tube. Using a tube  
cutter, cut the pinch-off tube about 2 inches from  
the pinch-off tool. Use sil-fos braze and braze  
pinch-off tube closed. Turn off the unit, allow it to  
set for a while, and then test the leakage of the  
pinch-off connection.  
3) Operate the vacuum pump vaccum for 20 to 30  
minutes, until 600 microns of vaccum is  
obtained. Close valves A and B, and observe  
vacuum gauge for a few minutes. A rise in pres-  
sure would indicate a possible leak or moisture  
13 Room Air Conditioner  
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Disassembly  
Equipment needed: Vacuum pump, Charging cylinder, Manifold gauge, Brazing equipment. Pin-off tool capable  
of making a vapor-proof seal, Leak detector, Tubing cutter, Hand Tools to remove components, Service valve.  
COMPOUND GAUGE  
CONDENSER  
(HIGH PRESSURE SIDE)  
MANIFOLD  
GAUGE  
A
B
CAPILLARY TUBE  
SEE INSETS  
BELOW  
EVAPORATOR  
(LOW PRESSURE SIDE)  
COMPRESSOR  
HI  
LOW  
A
A
B
B
EXTERNAL  
VACUUM PUMP  
CHARGING  
CYLINDER  
C
Figure 14B-Charging  
Figure 14A-Pulling Vacuum  
Service Manual 14  
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Schematic Diagram  
Circuit Diagram  
MODEL : TOUCH & REMOTE CONTROL TYPE MODEL  
WH  
(BL)  
(SMPS)  
250V/T2A  
(250V/T3.15A)  
MEZ62420717  
LOCATION  
Q'TY  
DESCRIPTION  
NO.  
PER SET  
1
2
3
4
5
6
7
8
POWER CORD ASSEMBLY  
FAN MOTOR  
1
1
1
1
1
1
1
1
COMPRESSOR  
DISPLAY P.W.B ASSEMBLY  
MAIN P.W.B ASSEMBLY  
THERMISTOR  
CAPACITOR  
OWERLOAD PROTECTOR  
Service Manual 15  
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Schematic Diagram  
Electronic Control Device  
16 Room Air Conditioner  
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Troubleshooting Guide  
Troubleshooting Guide  
Piping System  
CONDENSER COIL  
FAN  
CAPILLARY TUBE  
COMPRESSOR  
MOTOR  
BLOWER  
EVAPORATOR COIL  
Figure 15 is a brief description of the important components and their function in what is called the refrigeration  
system. This will help you to understand the refrigeration cycle and the flow of the refrigerant in the cooling cycle.  
ROOM AIR CONITIONER  
CYCLE OF REFRIGERATION  
EVAPORATOR COILS  
CONDENSER COILS  
VAPOR INLET  
SUCTION LINE  
COOL LOW PRESSURE VAPOR  
HOT  
DISCHARGED  
AIR  
COMPLETE LIQUID  
BOIL OFF POINT  
COOLED  
AIR  
ROOM AIR HEAT LOAD  
OUTSIDE COOLING  
AIR FOR REFRIGERANT  
PASS THROUGH  
MOTOR  
COMPRESSOR  
OIL  
LIQUID  
PRESSURE  
DROP  
LIQUID OUTLET  
HIGH PRESSURE VAPOR  
(LIQUID REFRIGERANT)  
LIQUID REFRIGERANT  
LOW PRESSURE VAPOR  
CAPILLARY TUBE  
Figure 15  
17 Room Air Conditioner  
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Troubleshooting Guide  
Troubleshooting Guide  
In general, possible trouble is classified in two kinds.  
The one is called Starting Failure which is caused from an electrical defect, and the other is ineffective Air  
Conditioning caused by a defect in the refrigeration circuit and improper application.  
Unit runs but poor cooling.  
Ineffective Cooling  
Check cold air  
circulation for smooth  
flow.  
Check outdoor coil  
(heat exchanger) and  
fan operation.  
Check heat load  
increase.  
Clean condenser.  
Dirty indoor coil  
(heat exchanger)  
Check gas leakage.  
Repair gas leak.  
Not on separate circuit  
Malfunction of fan.  
Check inside gas  
pressure.  
Replacement of unit if  
the unit is beyond repair.  
Clogging of air filter.  
Obstruction at air outlet.  
Remove obstruction.  
Adjust refrigerant  
charge.  
Malfunction of  
compressor.  
Check clogging in refrigera-  
tion circuit.  
Replacement of  
compressor.  
Satisfactory operation  
with temperature  
Repair clogging in  
refrigeration circuit.  
difference of inlet & outlet  
air; 44~50°F (7~10°C)  
Service Manual 18  
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Troubleshooting Guide  
Fails to Start  
Check of circuit breaker  
and fuse.  
Check of power source.  
Check of control panel  
setting.  
Check control panel.  
Compressor fails only to  
start.  
Fan only fails to start.  
Improper wiring.  
Improper thermistor  
setting  
Drop of power voltage.  
Defect of fan motor  
capacitor.  
Defect of compressor  
capacitor.  
Loose terminal  
connection  
Irregular motor  
resistance ()  
Irregular motor  
insulation ()  
Capacitor check.  
Replacement.  
Improper wiring  
Replacement of fan motor.  
Regular but fails to start.  
Irregular motor resistance ()  
Irregular motor insulation ()  
Replacement of compressor.  
(Locking of piston, metal.)  
Replacement of compressor  
(Motor damaged).  
19 Room Air Conditioner  
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Troubleshooting Guide  
I MODEL : BG8000ER, WG8000RY4, WG1000RY4  
ELECTRIC PARTS TROUBLESHOOTING GUIDE:  
• The unit does not operate.  
Possible Trouble 1  
NO  
Check the Fuse.  
Check the wiring diagram.  
Is the Trans input power  
AC 115V?  
YES  
NO  
NO  
Check the Main  
P.W.B pattern.  
Is the Trans output power  
about AC 14V?  
Is shorted the Trans. output?  
YES  
YES  
• Exchange the Trans.  
Exchange D02D~D05D.  
NO  
NO  
Is output Voltage of IC01D  
DC 12V?  
• Exchange IC01D.  
YES  
• Exchange IC02D.  
Is output Voltage of IC02D  
DC 5V?  
YES  
NO  
NO  
NO  
Is the reset circuit all right?  
(The No.14 of Micom  
is 5V.)  
• Exchange IC01A.  
YES  
Is the  
• Connect connector  
exactly.  
connection between  
Main and Display  
all right?  
YES  
• Check the P.W.B  
pattern.  
Is the voltage No.18 of Micom  
DC 5V?  
YES  
Exchange Main P.W.B Ass'y.  
Service Manual 20  
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Troubleshooting Guide  
• The compressor does not operate.  
• Set the Temp. setting to lower Temp.  
Possible Trouble 2  
Is Temp.  
setting set lower than Room  
Temp.-0.5°C?  
NO  
NO  
YES  
NO  
NO  
Is the voltage No.10  
of IC01M 0V?  
Is the voltage N0.7 of  
Is the Unit for 3 minutes  
delay?  
IC01M DC 5V?  
YES  
YES  
YES  
• Check the RY-COMP.  
• Check the wiring  
Diagram.  
• Exchange IC01M.  
• Wait 3 Minutes  
• Exchange MAIN  
P.W.B Ass'y.  
• The compressor always operate.  
Possible Trouble 3  
• Connect LEAD Wire to  
RY-COMP again.  
NO  
Is the wire connection of  
RY-COMP all right?  
YES  
• Check the RY-COMP.  
• Fan does not operate.  
Possible Trouble 4  
NO  
Is the voltage NO.1 or 4  
of IC01M DC 5V?  
• Exchange IC01M.  
• Exchange IC01M.  
YES  
NO  
Is the voltage NO.13 or 16  
of IC01M 0V?  
YES  
• Check the RY-Hi or  
RY-Lo.  
Check the wiring diagram.  
21 Room Air Conditioner  
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Troubleshooting Guide  
• Romote controller does not operate.  
Possible Trouble 5  
NO  
NO  
Is the voltage of Battery  
about over 2.3V?  
• Exchange the battery.  
YES  
Is the voltage No.16  
of CN-DISP1 on Main P.W.B  
Ass'y DC 5V?  
Check the P.W.B pattern.  
YES  
• Connect connector to  
CN-DISP1 exactly.  
NO  
Is the connection of  
CN-DISP1 all right?  
YES  
Exchange Receiver Ass'y.  
• It displays abnormally on Display P.W.B Ass'y.  
Possible Trouble 6  
NO  
NO  
NO  
• Exchange IC01G.  
Is the IC01G all right?  
YES  
NO  
• Connect connector  
to CN-DISP1 exactly.  
Is the connection of  
CN-DISP1 all right?  
YES  
Does the Q01G,  
Q02G, Q03G Q04G operate normally  
on main P.W.B Ass'y?  
• Exchange Q01G,  
Q02G, Q03G, Q04G  
YES  
• Exchange the display  
P.W.B Ass'y.  
Service Manual 22  
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Troubleshooting Guide  
ROOM AIR CONDITIONER VOLTAGE LIMITS  
NAME PLATE RATING  
115V ± 10%  
MINIMUM  
103.5V  
MAXIMUM  
126.5V  
COMPLAINT  
CAUSE  
REMEDY  
Fan motor will not run.  
No power  
Check voltage at outlet. Correct if none.  
Wire disconnected or  
connection loose  
Connect wire. Refer to wiring diagram for  
terminal identification. Repair or replace loose  
terminal.  
Capacitor (Discharge  
Test capacitor.  
capacitor before testing.)  
Replace if not within ±10% of manufacturer's  
rating. Replace if shorted, open, or damaged.  
Will not rotate  
Fan blade hitting shroud or blower wheel hitting  
scroll. Re-align assembly.  
Units using slinger ring condenser fans must  
have 0.22~0.25 inch clearance to the base.  
If necessary, shim up the bottom of the fan motor  
with mounting screw(s).  
Check fan motor bearings; if motor shaft will not  
rotate, replace the motor.  
Fan motor runs.  
Revolves on overload  
Check voltage. See limits on this page.  
If not within limits, call an electrician.  
Test capacitor.  
Check bearings. Does the fan blade rotate  
freely?  
If not, replace fan motor.  
Pay attention to any change from high speed to  
low speed. If the speed does not change,  
replace the motor.  
23 Room Air Conditioner  
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Troubleshooting Guide  
REMEDY  
COMPLAINT  
CAUSE  
Fan motor noise.  
Fan  
If cracked, out of balance, or partially missing,  
replace it.  
Blower  
If cracked, out of balance, or partially missing,  
replace it.  
Loose set screw  
Worn bearings  
Tighten it.  
If knocking sounds continue when running or  
loose, replace the motor. If the motor hums or  
noise appears to be internal while running,  
replace motor.  
Compressor will not run,  
fan motor runs.  
Voltage  
Wiring  
Check voltage. See the limits on the preceding  
page. If not within limits, call an electrician.  
Check the wire connections; if loose, repair or  
replace the terminal. If the wires are discon-  
nected, refer to wiring diagram for identification,  
and replace the wires. Check the wire connections;  
If not according to the wiring diagram, correct  
the connections.  
Thermistor  
Check the TEMP control. If not at the lowest  
number, set TEMP control to this setting and  
restart the unit.  
Check the continuity of the thermistor. Replace  
the thermistor if the circuit is open.  
Rotary  
Check for continuity, refer to the wiring diagram  
for terminal identification. Replace the switch if  
the circuit is open.  
Capacitor (discharge  
capacitor before  
servicing.)  
Check the capacitor.  
’s  
Replace if not within ±10% of manufacturer  
rating, replace if shorted, open, or damaged.  
Compressor  
Overload  
Check the compressor for open circuit or  
ground. If open or grounded, replace the  
compressor.  
Check the compressor overload if externally mounted.  
Replace if open. (If the compressor temperature is  
high, remove the overload, cool, and retest.)  
Service Manual 24  
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Troubleshooting Guide  
COMPLAINT  
CAUSE  
REMEDY  
Compressor cycles on  
overload.  
Voltage  
Check the voltage. See the limits on the  
preceding page. If voltage is not within these limits,  
call an electrician.  
Overload  
Check overload, if externally mounted.  
Replace if open. (If the compressor temperature  
is high, remove the overload, cool, and retest.)  
Compressor cycles on  
overload.  
Fan motor  
If not running, determine the cause. Replace if  
required.  
Condenser air flow  
restriction  
Remove the cabinet, inspect the interior surface  
of the condenser. If restricted, clean carefully  
with a vacuum cleaner (do not damage fins) or  
brush. Clean the interior base before  
re-assembling.  
Condenser fins  
(damaged)  
If the condenser fins are closed over a large  
area on the coil surface, head pressures will  
increase, causing the compressor to cycle.  
Straighten the fins or replace the coil.  
Capacitor  
Test the capacitor.  
Wiring  
Check the terminals. If loose, repair or replace.  
Check the system for a restriction.  
If restricted, clean or replace.  
Refrigeration system  
Air filter  
Insufficient cooling  
Excessive noise  
Unit undersized  
Blower or fan  
Determine if the unit is properly sized for the  
area to be cooled.  
Check the set screw, or clamp. If loose or miss-  
ing, correct. If the blower or fan is hitting scroll  
or barrier, rearrange the air handling parts.  
Copper tubing  
Remove the cabinet and carefully rearrange the  
tubing not to contact the cabinet,  
compressor, shroud, and barrier.  
25 Room Air Conditioner  
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Exploded View  
Exploded View  
130910  
749740  
731273  
148000  
359011  
346811  
352380  
W48602  
349600  
149980  
359012  
267110  
W48602  
349001  
349480  
567502  
152302  
135303  
147582  
130410  
550140  
135312  
147581  
249950  
W0CZZ  
567480  
268711-1  
238310  
146812  
264110  
268711-2  
237200  
135500  
Service Manual 26  
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ReplacementParts list  
LocNo  
DESCRIPTION  
Base Assembly,Single  
Cabinet Assembly,Single  
Grille,Inlet  
CP10F10  
67305518  
67303716  
67306112  
67306019  
67304701  
67300902  
67306209  
67306265  
67303910  
67305519  
67304308  
67305514  
67500143  
67500146  
67300022  
67302232  
67303039  
67303508  
67303413  
67303607  
67302737  
67302614  
67302616  
67305000  
67307806  
67301904  
67306313  
67304009  
67307623  
67307622  
67300709  
67302500  
CP12F10  
67305518  
67303716  
67306112  
67306019  
67304701  
67300902  
67306209  
67306265  
67303910  
67305519  
67304308  
67305514  
67500143  
67500147  
67300028  
67302232  
67303040  
67303508  
67303413  
67303607  
67302737  
67302614  
67302616  
67305000  
67307806  
67301905  
67306313  
67304009  
67307623  
67307625  
67300728  
67302500  
130410  
130910  
135303  
135312  
135500  
146812  
147581  
147582  
148000  
149980  
152302  
237200  
238310  
249950  
264110  
267110  
346811  
349001  
349480  
349600  
352380  
359011  
359012  
550140  
567480  
567502  
731273  
749740  
268711-1  
268711-2  
W0CZZ  
W48602  
Grille Assembly,Front(Indoor)  
Cover  
Motor,AC  
Louver,Horizontal  
Louver,Vertical  
Supporter  
Shroud  
Filter,Air  
Panel,Control  
Escutcheon  
Case Assembly,Control  
Power Cord Assembly  
Remote Controller Assembly  
AC Motor Assembly  
Damper,Vent  
Orifice  
Bracket,Motor  
Guide Assembly,Air  
Fan,Axial  
Fan,Turbo  
Damper,Compressor  
Thermistor,NTC  
Overload Protect  
Install Part Assembly,Single  
Guide  
PCB Assembly,Display  
PCB Assembly,Main  
Capacitor,Film,Box  
Clamp,Spring  
27 Room Air Conditioner  
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Use Factory Certified Parts...  
FRIEDRICH AIR CONDITIONING CO.  
Post Office Box 1540 4200 N. Pan Am Expressway San Antonio, Texas 78295-1540  
(210) 357-4400 FAX (210) 357-4490  
CP10 - CP12 Svc Parts 2010 (05/10)  
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